Multi-angle adjusted and locked multi-link connection device

Abstract

The invention discloses a multi-angle adjusted and locked multi-link connection device in mechanical equipment. The lower ends of links are provided with ball heads, the upper ends are all provided with cylindrical bosses, the center of the surface of the cylindrical boss of the first link is provided with a first spherical groove with an inner diameter size equal to the size of the outer diameterof a second ball head of the second link, the upper surfaces of the cylindrical bosses are coaxially and fixedly connected to ring-shaped link covers, central holes of the link covers are coaxially and tightly provided with ring-shaped bearings in a sleeve mode, the bearings each are composed of two identical half-ring bodies in a radial direction folding manner, the middle of a bearing shell ofeach half-ring body is provided with a semicircular arc-shaped groove in a semicircular ring shape, the interior of each semicircular arc-shaped groove is internally provided with a permanent magnet,a bearing spring and an electromagnet, the two permanent magnets are both radially magnetized and are opposite in magnetizing direction, during an initial state, the two permanent magnets attract andlock the second ball head, when an angle of the links is adjusted, coils of the electromagnets are energized, the two permanent magnets loosen the second ball head, multi-angle adjustment of a multi-link structure is achieved, and disassembly is convenient.

Description

technical field [0001] The invention relates to a connection device in mechanical equipment, in particular to a multi-link connection device which can freely adjust the angle and perform locking. Background technique [0002] The connection devices in traditional mechanical equipment can be seen everywhere in daily life, such as computer brackets and fan oscillating mechanisms, but there are often problems such as a series of electrical failures and high costs. Although these common mechanisms can meet the needs of daily life, they often face problems such as overly complex mechanical structures, inconvenient installation, and complicated labor repair costs, especially for connecting devices in heavy industries, such as excavators. Grabbing heads, etc., not only require a flexible control mechanism but also require a connection device for carrying heavy objects. [0003] At present, the connection devices commonly used between connecting rods are divided into welding or tra...

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Problems solved by technology

[0002] The connection devices in traditional mechanical equipment can be seen everywhere in daily life, such as the computer stand and the shaking head mechanism of the fan, but there are often problems such as a series of electrical failures and high costs

Although these common mechanisms can meet the needs of daily life, they often face problems such as overly complex mechanical structures, inconvenient installation, and complicated labor repair costs, especially for connecting devices in heavy industries, such as excavators. Grabbing heads, etc., not only require a flexible control mechanism but also require a connection device for carrying heavy objects

[0003] At present, the connection devices commonly used between connecting rods are divided into welding or traditional mechanical connection, but welding will fix the position between the connecting rods, and the angle cannot be changed, resulting in the movement of the connecting rods is not flexible enough, and the welding process requires high requirements. Improper use will lead to a decrease in the bearing capacity of the connecting rod structure

Therefore, a freely controllable mechanical connection is considered a better choice. For example, a double ball-joint link connection device for the connection of the adjustable bracket of the lamp disclosed in the document of Chinese Patent Application No. 201410449778.0, although it reduces The volume of the connecting device is reduced, and the rotation adjustment of the connecting rod device can be realized, but the mechanism is locked by the friction between the connecting rods, it is not easy to carry heavy objects, and the complex structural design also leads to difficulties in installation and maintenance

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